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Finding the Fourth Proportional to 550,493.12, 759,619.68 and 308,725.88

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Solution

The fourth proportional to 550,493.12, 759,619.68 and 308,725.88 is: 426,007.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,493.12 : 759,619.68 = 308,725.88 : x
  2. Step 2: Convert to fraction form
    550,493.12/759,619.68 = 308,725.88/x
  3. Step 3: Cross multiply
    550,493.12x = 759,619.68 × 308,725.88
  4. Step 4: Simplify right side
    550,493.12x = 234,514,254,173.32
  5. Step 5: Solve for x
    x = 234,514,254,173.32/550,493.12
  6. Step 6: Final answer
    x = 426,007.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.